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Proceedings Paper

Digital imaging as a detector for quantitative colorimetric analyses
Author(s): Liam Byrne; Kim Lau; Steve Edwards; Dermot Diamond
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Paper Abstract

In this paper, a digital imaging system was used to analyze a series of colorimetric reagent dots. A commercially available digital camera was used with in-house developed software to capture and analyze data. The color captured was digitized and broken down into three 8-bit color values (red, green and blue). The data was then processed to generate distinct recognizable patterns that represent the original color input. A pH indicator sensor array was used to demonstrate the practicality of the system. Preliminary results show that the system is able to discriminate samples over a wide pH range (pH 1-13) and resolve samples to within ± 0.5 pH units.

Paper Details

Date Published: 26 February 2001
PDF: 11 pages
Proc. SPIE 4205, Advanced Environmental and Chemical Sensing Technology, (26 February 2001); doi: 10.1117/12.417460
Show Author Affiliations
Liam Byrne, Dublin City Univ. (Ireland)
Kim Lau, Dublin City Univ. (Ireland)
Steve Edwards, Kodak UK (United Kingdom)
Dermot Diamond, Dublin City Univ. (Ireland)


Published in SPIE Proceedings Vol. 4205:
Advanced Environmental and Chemical Sensing Technology
Tuan Vo-Dinh; Stephanus Buettgenbach, Editor(s)

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